The Iwatobi Swim Club has a full roster now.As they begin to practice, they run into a little trouble.After a certain member claims that his swimsuit is to blame, the club makes a trip to buy new swimsuits.

The crew ponders how to attract new members to the Swim Club. Haruka is called in by Amakata-sensei to discuss his intended career path, but as always, Haruka moves to the beat of his own drum. Meanwhile, Coach Sasabe brings an interesting opportunity to the boys…

As the tournament continues, Sousuke finally tells Rin about how he’s passed their years of separation. Rin is concerned at Sousuke’s nonchalant attitude toward certain things and tries to speak his mind. Meanwhile, the Iwatobi Swim Club looks toward the relay final.

Rin, now living in Australia, trains hard every day with swimmers from all around the world. Then a Japanese guy shows up where his team is training, challenging each of his teammates to races and beating them one by one. Even Rin is surprised when this newcomer reveals his identity...

Makoto has been unable to get in touch with Haruka following the friendly race at his training camp, making him worry that Haruka is dwelling on what happened. Then Nao approaches Makoto to tell him about a rumor he heard.